CN112977532A - Servo connecting device and brake clamp unit - Google Patents
Servo connecting device and brake clamp unit Download PDFInfo
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- CN112977532A CN112977532A CN202110289805.2A CN202110289805A CN112977532A CN 112977532 A CN112977532 A CN 112977532A CN 202110289805 A CN202110289805 A CN 202110289805A CN 112977532 A CN112977532 A CN 112977532A
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- hanging
- flange
- follow
- hole
- mounting hole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/50—Other details
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- Braking Arrangements (AREA)
Abstract
The application provides a follow-up connecting device and braking clamp unit, braking clamp unit includes servo mechanism and braking actuating mechanism, and this follow-up connecting device is including being used for connecting braking actuating mechanism with servo mechanism's follow-up connecting seat, and be used for connecting the seat that hangs of servo mechanism and bogie. The connecting device can realize the stable connection between the follow-up mechanism and the bogie and between the follow-up mechanism and the brake actuating mechanism, and the track gauge changing process of the train adopting the follow-up connecting device to connect the bogie and the brake clamp unit is stable and reliable.
Description
Technical Field
The application belongs to the technical field of rail vehicle braking, and particularly relates to a follow-up connecting device and a braking clamp unit.
Background
The specifications of the rail gauges of different countries and regions are different, the distance between wheels of the variable-gauge high-speed train needs to be changed along with the change of the rail distance, and therefore the brake clamp unit also needs to change the rail gauge along with the wheels. Chinese patent application CN108482415A discloses a rigid following mechanism for a track-gauge-variable bogie and a brake caliper unit, which proposes a brake caliper unit comprising a following mechanism that can vary the track gauge with wheels, the brake caliper unit being connected to the bogie by a mounting bracket. The servo mechanism needs to be stably connected to a bogie in the running process of a train, and the servo mechanism and the brake actuating mechanism also need to be stably connected, so that the servo connecting device and the brake clamp unit are provided.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides a follow-up connecting device and a brake clamp unit.
The technical scheme provided by the application is as follows:
a follow-up connection device is used for a brake clamp unit of a variable-gauge bogie and comprises a follow-up mechanism and a brake actuating mechanism, wherein the follow-up connection device comprises a follow-up connection seat used for connecting the brake actuating mechanism and the follow-up mechanism and a hanging seat used for connecting the follow-up mechanism and the bogie;
the follower link base includes a first base portion; a first connecting part is arranged on the upper side of the first base part and can be connected to a follow-up mechanism; a first hanging part is arranged on the lower side of the first base part and can be connected to the brake actuating mechanism;
the hanger comprises a second base; a second connecting part is arranged on the upper side of the second base part and can be connected to the bogie; and a second hanging part is arranged on the lower side of the second base part and can be connected to the follow-up mechanism.
In some embodiments of the present application, the following mechanism includes an alignment positioning device and a plurality of fixing members parallel to each other, and the fixing members are provided with a first positioning hole and a second positioning hole; the first connecting part is provided with a first sliding hole, and the fixing part is arranged in the first sliding hole in a penetrating manner; the first connecting part is also provided with a first mounting hole for mounting the alignment positioning device; the first mounting hole is opposite to the first positioning hole or the second positioning hole.
In some embodiments of the present application, a first sliding bearing is sleeved inside the first sliding hole, and the first sliding bearing can be matched with a fixing piece, so that the fixing piece can move relatively along the first sliding hole; and the first hanging part is provided with a first hanging hole for installing the brake actuating mechanism.
In some embodiments of the present application, the second hanging portions are arranged in pairs, the paired second hanging portions are respectively connected to two ends of the fixing member, a second hanging hole is formed in the second hanging portion, the second hanging holes of the paired second hanging portions are opposite to each other, a flange insulating sleeve is pressure-equalized in the opposite second hanging holes, and two ends of the fixing member are positioned in the second hanging hole through the flange insulating sleeve.
In some embodiments of the present application, a dust-proof cover is connected between the first connecting portion and the two second hanging portions that are provided in pairs, and both ends of the dust-proof cover are fastened and sealed with the first connecting portion and the second hanging portions through fasteners.
In some embodiments of the present application, a first end and a second end of the first connection portion are both provided with a first groove; the flange insulating sleeve is provided with a flange end, the flange end is opposite to the first connecting part, and a second groove is formed in the flange end;
a first dustproof sleeve is connected between the first end of the first connecting part and the second hanging part, one end of the first dustproof sleeve is embedded into the first groove, and the other end of the first dustproof sleeve is embedded into the second groove; and a second dustproof sleeve is connected between the second end of the first connecting part and the second hanging part, one end of the second dustproof sleeve is embedded into the second groove, and the other end of the second dustproof sleeve is embedded into the first groove.
In some embodiments of the present application, a ventilation groove is formed in an inner wall of the first sliding hole, and the ventilation groove can communicate with dust covers located on two sides of the first connecting portion.
In some embodiments of the present application, the alignment and positioning device includes a steel ball, a support for supporting the steel ball, a spring sleeved outside the support and supporting the support, an insulating spring seat for supporting the spring, and a gland nut sleeved outside the insulating spring seat, wherein the gland nut is in threaded connection with the first mounting hole;
the first mounting hole is a stepped hole and comprises a small-diameter mounting hole and a large-diameter mounting hole which are communicated with each other; the outer periphery of the support is provided with a first flange, the first flange divides the support into a first part and a second part, and the outer diameter of the first flange is larger than the inner diameter of the small-diameter mounting hole; the first portion may extend into the small-diameter mounting hole, and the first flange restricts the second portion from entering the small-diameter mounting hole;
and a small flange insulating sleeve is pressed in the small-diameter mounting hole and is connected with the insulating spring seat.
In some embodiments of the present application, a locking washer is further connected between the gland nut and the first connecting portion, and the locking washer includes a circular ring portion and a handle portion disposed at one side of the circular ring portion and connected to the circular ring portion; a fourth groove matched with the handle part is formed in the position, corresponding to the handle part, of the first connecting part, and the handle part can be inserted into the fourth groove; the gland nut comprises an outer hexagonal head and a screw rod;
after the gland nut is screwed, the circular ring part can be folded along one side of the outer hexagon head, so that the gland nut is prevented from rotating reversely and then being unscrewed;
or a second flange protruding out of the screw is further arranged on one side, close to the screw, of the hexagonal socket head, the second flange is provided with two planes extending along the axial direction of the screw, and the two planes are parallel to each other; when the gland nut is screwed, the circular ring part can be folded along one of the planes, so that the gland nut is prevented from reversely rotating and then being unscrewed.
In some embodiments of the present application, two symmetrically arranged cantilever beams are connected to one end of the first base portion facing the rim, and identification friction plates are connected to the ends of the cantilever beams for identifying the movement of the wheel.
The present application also provides a brake caliper unit comprising a follower connection as described hereinbefore, further comprising a follower mechanism and a brake actuator, the follower connection being operable to connect the brake actuator and follower mechanism and to connect the follower mechanism to a bogie.
Compared with the prior art, the beneficial effect of this application is: the application provides a servo connection device can realize the stable connection between servo mechanism and bogie, servo mechanism and the braking actuating mechanism. Through first connecting portion, follow-up mechanism's mounting and follow-up connecting device are stably connected, realize mounting and follow-up connecting device's relative motion through slide bearing. The fixing piece is positioned in the second hanging hole of the hanging seat to realize connection of the follow-up mechanism and the hanging seat, and the flange insulating sleeve pressed in the second hanging hole can realize insulation between the follow-up mechanism and the hanging seat. The dustproof sleeve arranged between the first connecting part and the second hanging part improves the sealing performance of the follow-up mechanism, so that the follow-up mechanism is applicable to wind, sand, rain and snow weather and severe environments. The dustproof sleeves on the two sides are communicated through the vent grooves, so that the left and right movement of the follow-up mechanism is balanced, and the centering can be accurate. The whole follow-up connecting device has the advantages of compact structure, light weight, convenience in installation, simplicity and reliability. The matched design of the gland nut and the anti-loosening gasket can effectively prevent the screw thread from loosening, so that the locking of the steel ball and the positioning hole is more accurate and firm. Static electricity generated in the operation process of the brake clamp unit is isolated from the bogie through the follow-up connecting device, and the safety performance of the brake clamp unit during service is ensured.
Drawings
FIG. 1 is a schematic structural view of a follower link according to an embodiment of the present application, wherein the follower link is connected to a brake caliper unit;
FIG. 2 is a schematic structural diagram of a follower link base according to an embodiment of the present application;
FIG. 3 is a schematic view of a hanger bracket according to an embodiment of the present application;
FIG. 4 is a schematic view of a follower link according to an embodiment of the present application, wherein the follower link is coupled to a follower mechanism;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic structural view of a fastener according to an embodiment of the present application;
FIG. 7 is an enlarged partial schematic view of portion B of FIG. 2;
FIG. 8 is an enlarged partial schematic view of portion C of FIG. 5;
FIG. 9 is an enlarged partial schematic view of portion D of FIG. 1;
FIG. 10 is a schematic structural view of a gland nut according to one embodiment of the present application;
numbering in the figures: 1. a follow-up mechanism; 11. a fixing member; 111. a first positioning hole; 112. a second positioning hole; 113. a blocking portion; 114. a first nut; 115. a first gasket; 12. aligning the positioning device; 121. a steel ball; 122. a support; 1221. a first flange; 1222. a first portion; 1223. a second portion; 123. a spring; 124. an insulating spring seat; 125. a gland nut; 1251. an outer hexagonal head; 1252. a screw; 1253. a second flange; 1254. a plane; 126. a small flange insulating sleeve; 2. a brake actuator; 3. a servo connection seat; 31. a first base; 32. a first connection portion; 321. a first slide hole; 3211. a vent channel; 322. a first mounting hole; 3221. a small-diameter mounting hole; 3222. a large-diameter mounting hole; 323. a first sliding bearing; 324. a first end; 325. a second end; 326. a first groove; 327. a third groove; 33. a first hanging part; 331. a first hanging hole; 4. a hanging seat; 41. a second base; 42. a second connecting portion; 43. a second hanging part; 431. a second hanging hole; 432. a square hole; 5. a flange insulating sleeve; 51. a flange end; 52. a second groove; 6. a dust-proof sleeve; 61. a first dust cover; 62. a second dust-proof sleeve; 7. a fastener; 8. a lock washer; 81. a circular ring part; 82. a handle portion.
Detailed Description
The technical solutions of the present application are explained in detail below with reference to specific embodiments, however, it should be understood that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in fig. 1, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiments described above are merely preferred embodiments of the present application, and are not intended to limit the scope of the present application, and various modifications and improvements made to the technical solutions of the present application by those skilled in the art without departing from the spirit of the present application should fall within the protection scope defined by the claims of the present application. For convenience of description, a side close to the bogie is referred to as an upper side, and a side far from the bogie is referred to as a lower side.
A brake clamp unit for a variable-gauge bogie comprises a follow-up mechanism 1 and a brake actuating mechanism 2, as shown in figures 1-3, a follow-up connection device provided for one embodiment of the application comprises a follow-up connection seat 3 for connecting the brake actuating mechanism 2 and the follow-up mechanism 1, and a hanging seat 4 for connecting the follow-up mechanism 1 and the bogie;
the servo connecting seat 3 includes: a first base 31; the first base 31 is provided with a first connecting part 32 on the upper side, and the first connecting part 32 can be connected to the follow-up mechanism 1; a first hanging part 33 is arranged at the lower side of the first base part 31, and the first hanging part 33 can be connected to the brake actuating mechanism 2;
the hanger 4 includes: a second base 41; the second base 41 is provided with a second connecting part 42 at the upper side, and the second connecting part 42 can be connected to a bogie; the second hanging portion 43 is provided on the lower side of the second base portion 41, and the second hanging portion 43 is connectable to the servo mechanism 1.
Specifically, as shown in fig. 4-6, the following mechanism 1 includes an alignment positioning device 12 mounted on the following connection seat and a plurality of fixing members 11 parallel to each other, and the fixing members 11 are provided with a first positioning hole 111 and a second positioning hole 112. The following mechanism with two fixing members is taken as an example to describe the present application, that is, the following mechanism includes two fixing members 11 parallel to each other, and both the two fixing members 11 have a first positioning hole 111 and a second positioning hole 112. Of course, the number of the fixing members is not limited to two, and three, four or more fixing members may be provided, which is specifically set according to the actual situation, and of course, the components matched with the fixing members in the following description may be correspondingly provided.
Further, as shown in fig. 2, the first connecting portion 32 is provided with a first sliding hole 321, and the fixing member 11 is inserted into the first sliding hole 321; the first connecting portion 32 is further provided with a first mounting hole 322 for mounting the alignment positioning device 12; the first mounting hole 322 is opposite to the first positioning hole 111 or the second positioning hole 112 of the fixing member, so as to realize the positioning function of the alignment positioning device 12 on the fixing member 11. As shown in fig. 2 and fig. 5, in the present embodiment, two first connection portions 32 are provided, and each first connection portion 32 is provided with a first sliding hole 321, and two fixing members 11 of the follower mechanism are respectively inserted into the two first sliding holes 321; each first connecting portion 32 is provided with a first mounting hole 322, and each first mounting hole 322 is opposite to the first positioning hole 111 or the second positioning hole 112 of the fixing member 11 passing through the first mounting hole 322. The servo connecting seat is a part of the servo connecting device and also serves as the servo connecting seat in the servo mechanism, and therefore the structure of the whole device is simplified. In the process of changing the rail of the wheel, the wheel pushes the fixing piece of the follow-up mechanism to move relative to the follow-up connecting seat along the first sliding hole, and then the brake actuating mechanism connected with the first hanging part is driven to move synchronously.
As shown in fig. 5, a first sliding bearing 323 is sleeved inside the first sliding hole 321, and the first sliding bearing 323 can be engaged with the fixed member 11, so that the fixed member 11 can move relatively along the first sliding hole 321. Specifically, the first sliding bearing 323 is provided at both ends inside the first sliding hole 321 to support the fixing member 11 from both ends of the first sliding hole 321, so that the movement of the fixing member 11 with respect to the first sliding hole 321 is more stable. High-strength non-metallic materials can be selected for the first sliding bearing, and then the insulation between the fixing piece of the follow-up mechanism and the follow-up connecting seat is realized.
As shown in fig. 2, the first hanging portion 33 is provided with a first hanging hole 331 for mounting the brake actuator. The brake actuating mechanism can be provided with a hanging structure matched with the first hanging hole, and the brake actuating mechanism can be stably connected with the follow-up connecting seat.
As shown in fig. 3, the second hanging portions 43 are provided in pairs, and the second hanging portions 43 in pairs are respectively connected to two ends of the fixing member 11, so as to connect the hanging seat 4 and the follower link seat 3. In the present embodiment, there are two fasteners 11, and thus, there are two pairs of second hanging portions 43. Specifically, as shown in fig. 4 and 5, the second hanging portion 43 is provided with second hanging holes 431, the second hanging holes 431 of the second hanging portions 43 arranged in pairs are opposite, the flange insulating sleeves 5 are pressure-equalized in the opposite second hanging holes 431, and both ends of the fixing member 11 are positioned in the second hanging holes 431 through the flange insulating sleeves 5. The flange insulating sleeve can be made of high-strength nylon materials, and the insulation between the follow-up connecting seat and the hanging seat is realized through the flange insulating sleeve. The flange insulating sleeve 5 can be sealed and protected by arranging an O-shaped ring. When the follow-up connecting seat moves along with the wheel, the follow-up connecting seat moves relative to the fixing piece, and therefore the follow-up connecting seat moves relative to the hanging seat. As shown in fig. 6, the fixing member 11 is a sliding rod structure, and one end of the fixing member 11 has a stopper 113, the outer diameter of the stopper 113 is larger than the inner diameter of the second hanging hole 431, and the other end of the fixing member 11 is further locked in the second hanging hole 431 by the first nut 114. A first spacer 115 is provided between the first nut 114 and the second hanging portion 43.
Preferably, as shown in fig. 5, a dust boot 6 is connected between the first connecting portion 32 and each of the two second hanging portions 43 provided in pair, and both ends of the dust boot 6 are fastened and sealed to the first connecting portion 32 and the second hanging portions 43 by fasteners 7. The arrangement of the dustproof sleeve can effectively realize the sealing protection of the follow-up mechanism, so that dust and accumulated water are difficult to enter the device. The fastener can be a hose clamp or a cable tie, and other alternatives can be selected. The dustproof sleeve is made of silicon rubber materials, is aging-resistant and long in service life, and reduces the replacement frequency of the dustproof sleeve during the service period of the brake clamp unit.
Specifically, as shown in fig. 5, the first end 324 and the second end 325 of the first connecting portion 32 are both opened with a first groove 326; the flange insulating sleeve 5 is provided with a flange end 51, the flange end 51 is opposite to the first connecting part 32, and a second groove 52 is formed in the flange end 51;
a first dustproof sleeve 61 is connected between the first end 324 of the first connecting part and the second hanging part 43, one end of the first dustproof sleeve 61 is embedded into the first groove 326, and the other end is embedded into the second groove 52; a second dust-proof cover 62 is connected between the second end 325 of the first connecting portion and the second hanging portion 43, one end of the second dust-proof cover 62 is embedded in the second groove 52, and the other end is embedded in the first groove 326. Taking the direction shown in fig. 5 as an example, when the follower connecting seat 3 moves along with the wheel, the follower connecting seat 3 moves leftward, so as to compress the first dust-proof sleeve 61 on the left side, and the second dust-proof sleeve 62 on the right side extends.
Optionally, as shown in fig. 7, a ventilation groove 3211 is formed in an inner wall of the first sliding hole 321, and the ventilation groove 3211 may communicate with the dust covers 6 located at two sides of the first connecting portion 32, that is, the first dust cover 61 and the second dust cover 62, so as to keep the air pressure of the dust covers 6 at two sides stable. In the process that the follow-up connecting seat moves leftwards or rightwards, the moving resistance in two directions is not different due to different air pressures on two sides.
As shown in fig. 5 and 8, the aligning and positioning device 12 disposed in the first mounting hole 322 includes a steel ball 121, a support 122 supporting the steel ball 121, a spring 123 sleeved outside the support 122 and supporting the support 122, an insulating spring seat 124 supporting the spring 123, and a gland nut 125 sleeved outside the insulating spring seat 124, wherein the gland nut 125 is in threaded connection with the first mounting hole 322, so as to package the aligning and positioning device 12 in the first mounting hole 322.
Alternatively, as shown in fig. 8, the first mounting hole 322 is a stepped hole, and includes a small-diameter mounting hole 3221 and a large-diameter mounting hole 3222 which are communicated with each other; the outer circumference of the seat 122 has a first flange 1221, the first flange 1221 divides the seat into a first portion 1222 and a second portion 1223, the outer diameter of the first flange 1221 is larger than the inner diameter of the small-diameter mounting hole 3221; the first portion 1222 may extend into the small diameter mounting aperture 3221, while the first flange 1221 limits the second portion 1223 from entering the small diameter mounting aperture 3221. The arrangement of the stepped holes can limit the position of the steel ball entering the first positioning hole 111 or the second positioning hole 112, when the spring 123 pushes the steel ball 121 to enter the first positioning hole 111, if the instantaneously released elastic force is too large, the steel ball 121 can impact the fixing member 11, and the first flange 1221 can transfer the elastic force to the first flange 1221 when the steel ball 121 abuts against the fixing member 11.
The small flange insulating sleeve 126 is pressed in the small diameter mounting hole 3221, and the small flange insulating sleeve 126 is connected with the insulating spring seat 124 to form an insulating barrier, so that insulation between the alignment positioning device 12 and the first connecting portion 32 is realized.
First slide bearing, flange insulation cover, little flange insulation cover, insulating spring seat can effectively realize hanging the seat and follow-up connection seat between insulating isolation.
Optionally, as shown in fig. 8 and 9, a locking washer 8 is further connected between the gland nut 125 and the first connecting portion 32, the locking washer 8 includes a circular portion 81 and a shank portion 82 disposed on one side of the circular portion 81 and connected to the circular portion 81, a third groove 327 matched with the shank portion 82 is formed in the first connecting portion 32 at a position corresponding to the shank portion 82, and the shank portion 82 can be inserted into the third groove 327; gland nut 125 includes an outer hex head 1251 and a screw 1252; after the gland nut 125 is screwed, the ring portion 81 of the anti-loosening gasket can be folded up along one side of the external hexagonal head 1251, so as to prevent the gland nut 125 from rotating reversely and loosening. The anti-loose gasket 8 is matched with the third groove 327, so as to realize stable installation of the alignment positioning device 12 and the first connecting portion 32. Optionally, as shown in fig. 10, the junction between the hexagon socket head 1251 and the screw 1252 is further provided with a second flange 1253 protruding from the hexagon socket head 1251, the second flange 1253 has two flat surfaces 1254 extending axially along the screw 1252, and the two flat surfaces 1254 are parallel to each other; after the gland nut 125 is tightened, the ring portion 81 of the anti-loosening gasket can be folded up along one of the flat surfaces 1254 to prevent the gland nut 125 from rotating in the opposite direction and loosening. In order to adapt to a narrow mounting space near the first mounting hole, a nonstandard nut with an outer hexagonal head smaller than a standard nut is adopted sometimes, but in order not to influence the sealing effect of the gland nut on the first mounting hole, a second flange capable of completely covering the first mounting hole is arranged, and two planes are arranged on the second flange and can be matched with a check gasket to realize the check of the gland nut.
As shown in fig. 3, a square hole 432 is communicated with the outside of the first installation hole 431, and accordingly, the blocking portion 113 of the fixing member is configured to be a square structure matched with the square hole 432, so that the square hole 432 can prevent the fixing member 11 from rotating, and an anti-rotation effect is achieved. The rotation prevention of the fixing member 11 may be realized by a key groove or other alternative means, in addition to the square hole. For example, a key is arranged on the periphery of the blocking part, and a matched groove is arranged in the first mounting hole, so that the function of preventing the fixing piece from rotating is realized.
Alternatively, as shown in fig. 2, two cantilever beams 34 are connected to one end of the first base 31 facing the rim, and identification friction plates 35 are connected to the ends of the cantilever beams 34 for identifying the movement of the wheel. The identification friction plate 35 is made of wear-resistant materials such as powder metallurgy and the like, and is suitable for dynamic friction of a wheel, the wheel rim pushes the identification friction plate 35, and then the cantilever beam 34 is pushed to drive the follow-up connecting seat 3 and the brake actuating mechanism 2 to move so as to adapt to the changed track gauge. The contact area between the identification friction plate and the wheel rim is large, and when the rim pushes the cantilever beam to move, the friction plate is stressed uniformly, so that the whole brake clamp unit moves more stably, and the friction plate is not easy to wear and identify.
Claims (10)
1. A follow-up connecting device is used for a brake clamp unit of a variable-gauge bogie, and the brake clamp unit comprises a follow-up mechanism and a brake actuating mechanism and is characterized by comprising a follow-up connecting seat used for connecting the brake actuating mechanism and the follow-up mechanism and a hanging seat used for connecting the follow-up mechanism and the bogie;
the follower link base includes a first base portion; a first connecting part is arranged on the upper side of the first base part and can be connected to a follow-up mechanism; a first hanging part is arranged on the lower side of the first base part and can be connected to the brake actuating mechanism;
the hanger comprises a second base; a second connecting part is arranged on the upper side of the second base part and can be connected to the bogie; and a second hanging part is arranged on the lower side of the second base part and can be connected to the follow-up mechanism.
2. The servo connection device as claimed in claim 1, wherein the servo mechanism comprises an alignment positioning device and a plurality of fixing pieces parallel to each other, and the fixing pieces are provided with a first positioning hole and a second positioning hole; the first connecting part is provided with a first sliding hole, and the fixing part is arranged in the first sliding hole in a penetrating manner; the first connecting part is also provided with a first mounting hole for mounting the alignment positioning device; the first mounting hole is opposite to the first positioning hole or the second positioning hole.
3. The follower link as recited in claim 2, wherein a first sliding bearing is fitted inside the first sliding hole, the first sliding bearing being engageable with a fixed member so that the fixed member is relatively movable along the first sliding hole; and the first hanging part is provided with a first hanging hole for installing the brake actuating mechanism.
4. The servo connection device as claimed in claim 2, wherein the second hanging portions are arranged in pairs, the paired second hanging portions are respectively connected with two ends of the fixing member, the second hanging portions are provided with second hanging holes, the second hanging holes of the paired second hanging portions are opposite, and flange insulating sleeves are arranged in the opposite second hanging holes in a pressure-equalizing manner, and two ends of the fixing member are positioned in the second hanging holes through the flange insulating sleeves.
5. The servo connection device according to claim 4, wherein a dust boot is connected between the first connection portion and each of the two second hanging portions arranged in pairs, and both ends of the dust boot are fastened and sealed with the first connection portion and the second hanging portions by fasteners.
6. The servo connection device of claim 5, wherein the first end and the second end of the first connection portion each define a first recess; the flange insulating sleeve is provided with a flange end, the flange end is opposite to the first connecting part, and a second groove is formed in the flange end;
a first dustproof sleeve is connected between the first end of the first connecting part and the second hanging part, one end of the first dustproof sleeve is embedded into the first groove, and the other end of the first dustproof sleeve is embedded into the second groove; a second dustproof sleeve is connected between the second end of the first connecting part and the second hanging part, one end of the second dustproof sleeve is embedded into the second groove, and the other end of the second dustproof sleeve is embedded into the first groove; the inner wall of the first sliding hole is provided with a vent groove, and the vent groove can be communicated with dustproof sleeves positioned on two sides of the first connecting part.
7. The servo connection device as claimed in claim 6, wherein the alignment and positioning device comprises a steel ball, a support for supporting the steel ball, a spring sleeved outside the support and supporting the support, an insulating spring seat for supporting the spring, and a gland nut sleeved outside the insulating spring seat, wherein the gland nut is in threaded connection with the first mounting hole;
the first mounting hole is a stepped hole and comprises a small-diameter mounting hole and a large-diameter mounting hole which are communicated with each other; the outer periphery of the support is provided with a first flange, the first flange divides the support into a first part and a second part, and the outer diameter of the first flange is larger than the inner diameter of the small-diameter mounting hole; the first portion may extend into the small-diameter mounting hole, and the first flange restricts the second portion from entering the small-diameter mounting hole;
and a small flange insulating sleeve is pressed in the small-diameter mounting hole and is connected with the insulating spring seat.
8. The follower coupling device according to claim 7, wherein a locking washer is further coupled between the gland nut and the first coupling portion, the locking washer including a circular ring portion and a shank portion disposed at one side of the circular ring portion and coupled to the circular ring portion; a fourth groove matched with the handle part is formed in the position, corresponding to the handle part, of the first connecting part, and the handle part can be inserted into the fourth groove; the gland nut comprises an outer hexagonal head and a screw rod;
after the gland nut is screwed, the circular ring part can be folded along one side of the outer hexagon head, so that the gland nut is prevented from rotating reversely and then being unscrewed;
or a second flange protruding out of the screw is further arranged on one side, close to the screw, of the hexagonal socket head, the second flange is provided with two planes extending along the axial direction of the screw, and the two planes are parallel to each other; when the gland nut is screwed, the circular ring part can be folded along one of the planes, so that the gland nut is prevented from reversely rotating and then being unscrewed.
9. The follower link as defined in claim 1 wherein, two symmetrically disposed cantilevered beams are attached to the first base portion toward the rim end, and wherein identification friction pads are attached to the ends of the cantilevered beams for identifying wheel movement.
10. A brake calliper unit comprising a follower connection as claimed in any of claims 1 to 9, and further comprising a follower and a brake actuator, the follower connection being operable to connect the brake actuator and follower and to connect the follower to a bogie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110289805.2A CN112977532B (en) | 2021-03-18 | 2021-03-18 | Servo connecting device and brake clamp unit |
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Address after: No. 231, Ruichang Road, North District, Qingdao, Shandong Applicant after: CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE Co.,Ltd. Applicant after: CRRC Brake System Co., Ltd Address before: No. 231, Ruichang Road, North District, Qingdao, Shandong Applicant before: CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE Co.,Ltd. Applicant before: Qingdao Sirui Technology Co., Ltd |
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